Sheet-metal-radiator-forming machine



Jan. 20, 1931.

L. A. ROBITAILLE' 1,789,324

SHEET METAL RADIATOR FORMING MACHINE Filed Jan. 28, 1929 2 Sheets-Sheet 1 A TTOINEY Jan. 20, 1931. ROBITAILLE 1,789,324

SHEET METAL RADIATOR FORMING MACHII IE Filed Jan. 28, 1929 2 Sheets-Sheet 2 lllllnllllllll i V Y xv Fla. 9.

Patented Jan. 20, 1931 tours ARTHUR ROIBITAILlBE OFYMOZNTREA/LI; QU'EZBEGi CANADA" SHEET-METAL-RADIATOR-FOBMI1\TGIMAOHHTE 7 Application filed was 2 1929, Serial 3 02'% and mcanaaa runes, 1928'.

g 7 The inventionrelates to a sheet metal' radiator' forming machine, as described in the prcsentspecificationand illustrated in the accompanying drawings that form part of i the same;

The-invention consists essentially of the" novel features of construction poi'nted'out broadly and" specifically in the claims for novelty following 'aCd'escriptioncontaining fo an explanationin detail of an acceptable former the invention:

The objects of the invention are to' c'on-- struct a sheet metal radiator at the least possibleexpenditure ofmoney and atthe" I25" sametime facilitate and insure efiicienoy' in the manufacture of this particular type of radiator; to maintain the. equality in the curls of a radiator, in which a tortuous and continuous path without obstructions-ismade for the course of the fluid; to bring these radiators-in sofar asthe pu-blic are concerned; within thereach of all, and thereby enable thos'eof'an economical t-urn of-mind to enjoy all the advantagesof the sheet metal radiator ata-comparativcly" low cost; and generally to provide an' eificient machine adapted for the purpose ofproducing sheet metal radi-s,

machine. I

Figure 3 is a plan view-showing a few'of theupper rollers and their spacing members? andnthe upper end blocks. 1 s

Figure 4 is a longitudinal sectional view'o-i themachin'e on the line 44 in Figure 2.

Figure 5 is a-ve'rtical" sectional view of the machine on the l1ne55 1n Figure 1 y the movement 01 the first roller tothe'blockv *Figure 7 is a diagrammatic view showing the movement of the second rollerto an upperblock; 7 a

"Figure 8' is a diagrammatic View showing the second lower roller moving to its position;

Figure 9 is a diagranimatic' view" showing the side mile 221 the second upper roller moving to imposition the positions of the rollers reversed -tliat is to say-5 the larger rollers atthetop'and th'e small rollers-at the bottom for making thesecond she'etofthe radiator casing. v i

Figure 12 isfa diagrammatic view which corresponds'toFigure 7; j I j Fi ure 13 is a dia rammatic View which correspond'sto- FigureS. Figure 14* is a diagrammatic View" corresponds to Figure9.

Figure- 1 5 is" a*' detail showing one sheetas turned outof thismachin'e; m Figure 16 is a'detail' showing the second sheet as turned out by thismach ine;

Figure 17 is a sectional detail ofa earria ge; Like" numerals ofreierence indicate corresponding parts in the various figure Referring to the drawings; thezmachine" frame is famed of tliestandardsQO and upper s'icle ra il sfil and-lower sider ail s 22 r The upper racks are'c'a rried'by the side rails 21 and the lower racks 24: are c'arried'by" The table 25supports the-'lower endiblocks' 26* and 27 extending across 1 the'machine and having the recessed faces ,28'a'nd 29 respec ti've'ly' v v 'TheV-uppcr blocks30 and 31 extend beyond the blocks 26 and 27 respectively and have the flat faces 32 I and -es res'pecuvciy The {upper carriages 34 travelion' the "racks 23 and; are formed withthe" guide whee1s'35 engaging said rails and the guide wheels 36 travellingon the hacker sa id rails. 5 e

The driving gears37 are suitably mounted on?the*carfia ges-=34'* and are driven Icy-power or by 'handas may be desirable, and for'the' purposes of this invention crank-handles 38 'F1gure'6 1s a diagrammatic view showingareshow n; thoughi'in all likelihood; these i "gears" wi-ll' -be-operatively' connected up to a the rails and the guides 44, engaging thebacks of the rails 24, as well as the operating as in every case the sheetsafter being rolled and curled must fitinto onev another and. be spaced apart when used for building a radiator.

In the operation of this machine the sheet metal is flanged at oneend 51 and inserted between the blocks 26 and 30, the flange 51 engaging the back of the block or engaging aslit in said block as may be found most convenient.

The sheet now stretches from the blocks'in the direction ofthe other end of the table and in its first position is lying fiat on the table towards its far end. v

The carriages 42 are now brought forward by means of the rack. and gear mechanism,- rolling on the plate until they reach the block 26, where the sheetofmetal is forced into the recessed face 28. This gives the sheet avery sharp bend at the upper edge of the block,

and curls said sheet into the recess as itfollows the bed of the said recess 28. V v

The inclination of the sheet is nowtorise '1; atthe far end and the smallerroller, 41 engages the bottom of the sheet, and is moved therealong by the carriages 34, these carriages being driven by this rack and gear mechanism. I v v The result of this operation is that the sheet iscurled around the roller 49 and the roller 41 pushes it against the flat face 32, thus the first S shape of the sheet is made. I

The'next operation is the first step repeated only in place of the roller going into the recess it movesup against the first roller put into the recess and thus the second S is started. This is clearly shown in Figurest, 7, 8 and 9, as the successive rollers are moved totheir positions.

brought from the other end and in forcing the block 31 on the recessed block 27 the sheet metal isbent thereunder, so that theeresult of thisbending and curling is a plurality of S shapes in the metal with two straight ends The sheet isfinished byan outside die and curled around to a tubular formationat the:

end of the radiator sheet.

In Figures 11, 12, 13 and 14, the only difference in the operationis that therollers are reversed. The large rollers are put ontop.

' while the small rollers are put on the bottom,

this produces a sheet which will fit into and the lonigtudinal spacers 52 are used between f the small rollers, and that providesithe necessary space within the radiator.

In finishing the radiator, this machine is.

In Figure 10 the blocks 27 and 31 are,

not concerned, as the ends are offset inwardly and a table, racks mounted on said side rails and carriages having a running gear of guiding wheels coacting with said racks and each carriage carrying an'operatinggear and a crank handle secured to the. operating gear, said carriages having rollercarrylng extensions, upper and lOWGI'fiblOCkS supported on said table at each end of the machine and forming grips for the ends ofa sheet of metal,

and rollers of different diameters in; upper and lower sets respectively and operated by said carriages towardsone set ofblocksand travellingalternately and respectively onthe top and bottom faces of saidsheet and form-.

ing a succession of S shapes in the metal.

2. In a sheet metal forming machine, aframe carrying tracks and forming, blocks,

carriageshaving roller recesses and travelling onsaid tracks and upper and lower sets of rollers adapted to enter the'recesses of said carriages respectively and to be propelled thereby and to be in turn placed individuallyunder andover said sheet in successive strokes of the carriages in the, direction of the form-.

ing blocks.

8. In a sheet metal, forming machine, a frame carrying tracks and forming blocks, carriages having. roller recesses and travelling on said tracks and upper and lower sets of rollers adapted to enter the recesses of said; carriages respectively, and to bepropelled,

thereby and'to be in turn placed individually under and over said sheet in successive strokes of the carriages in the direction of the forming blocks.

4. In a sheet metal forming machine,v a frame carrying tracks and forming blocks having fiat and arcuate faces, carriages'hav ing roller recesses and travelling on. said tracks and upper and lower sets ofrollers respectively and to be propelled thereby and to be in turn placed individually under and.

over said sheet against the flat and arcuate faces of the blocks. t 1

5. In a sheet metal forming machine,.a frame carrying tracks and forming blocks, carriages" having roller recesses and travelling on'said tracks and upper and lower sets of rollers .of different diameters adapted to enter the recesses-of the carriages respective- 1y. and to .be propelled thereby and to'be in turn placed individually under and over saidsheet and forming the sheet in- Sshapes successively arranged.

6. In a sheet'metal forming machine, a

frame carryin tracks and forming'upper V and lower bloc s ateach end of the machine,

' upper and lower carriages havin roller recesses and travelling on said trac s and upper and lower rollers of different diameters adapted to enter the recesses of said carriages respectively and adapted to be propelled thereby and to be in'turn placed individually under and over said sheet in successive strokes of the carriages 1n the direction of the form- 

